The total value of farms and ranches for sale in Colorado's Mesa County recently on Land.com was almost $549 million. This represents around 100,000 acres of farms, ranches, hunting land and other land for sale in Mesa County. Mesa County ranks fifth out of 64 counties in the Mile High State for the combined amount of land currently advertised for sale. Among cities in Mesa County with ranches, farms, hunting land and other rural land and acreage for sale, Grand Junction featured the most land for sale. Mesa County is one of the ten biggest counties in Colorado (3,341 square miles). It's located in the Northwest Colorado region of the state.